Photo-induced magnetoresistance enhancement in manganite heterojunction at room temperature

The enhanced magnetoresistance (MR) effect has been discovered under laser illumination in the La 2/3 Ca 1/3 MnO 3 film on the n-Si substrate at room temperature. The MR ratio dramatically increases from 0.54% to as large as 18% by irradiating with a 808 nm CW laser in 6.4 kOe magnetic field. Our re...

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Bibliographic Details
Published in:Journal of physics. D, Applied physics Applied physics, 2011-03, Vol.44 (9), p.095103
Main Authors: Yue, Z J, Zhao, K, Ni, H, Zhao, S Q, Kong, Y C, Wong, H K, Wang, A J
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Dielectric thin films
Dielectrics, piezoelectrics, and ferroelectrics and their properties
Exact sciences and technology
Magnetic properties and materials
Magnetic properties of surface, thin films and multilayers
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of specific thin films
Physics
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Summary:The enhanced magnetoresistance (MR) effect has been discovered under laser illumination in the La 2/3 Ca 1/3 MnO 3 film on the n-Si substrate at room temperature. The MR ratio dramatically increases from 0.54% to as large as 18% by irradiating with a 808 nm CW laser in 6.4 kOe magnetic field. Our results have potential applications to develop novel photo-magnetic functional devices operated at room temperature, and even possible multifunctional devices with tunable optical and magnetic properties.
ISSN:0022-3727
1361-6463
DOI:10.1088/0022-3727/44/9/095103